Bismuth salt of gallocarboxylic acid.



- tion added to a. solution of 966 parts of a specification.

rarboxylie acid (see Ber. 45, p. 1242) which UNITED dam RUDOLPH BERENDES, or ELBERFELD, GERMANY-,7 Assm non'ro .sYirrfiEnc rimms 00., INC., on NEW YORK, N. Y., A conrona'non on NEW YORK."

,BISMUTH' slim or. eALn-ocAmaOx nJIc mm.

No Drawing.

To (ZZZ whom it may concern Be .it known that I, RUDOLPH Bnnmsnns, doctor of philosophy, chemist, citizen of the German Empire, residing at Elberfeld, Germany, have invent-ed. new and useful Improvements in the Bismuth Salt of Gallocarboxyli'c Acid, of which the following is My present invention concerns the production of the hitherto unknown and therapolitically valuable bismuth salt 0: allocan be obtained by converting the acid or its salts, etc., into its bismuth salt.

The new product has proved to be avaluable remed as astringent and'disinfecting agent. It is a light YEHOW powder insoluble. in benzene, ether'and alcohol. soluble in caustic alkalis. It contains about 60 per cent. of bismuth;

In order to illustrate the new process more fully the following examples are givei'n the parts being by Weight Example 1 21st parts of anlrvdrous gallo carboX \-'lic acid are'dissolved in 1500 parts of methyl alcohol and the resulting solubismuth nitrate in 6000 parts of a 30 per cent. acetic acid. The precipitateis filtered an, washed until the Wash-water is neutral and dried at a moderate temperature.

Example 2: 292 parts of the potassium salt of gallocarbox 'hc acid are dissolved in i Soecification of Letters Patent. Application filed August. 15, 1913. Serial u meat.

in ether, benzene an my hand in the atented May 5', 1914."

4000 paof Wm water. Into the eat,- mg solution wet liydro'x'id of bismuth 0br' tained from 966 parts of nitrate of bismuth are starred w-hile ,acidulating-the mixture;

The yellow and dried;

Example 3: To a warm solution off-292 precipitate is filtered 'oflrl, washed parts of anhydrous potassium salt of gallocarbonylic acid in 6000 parts of water, a solu-" tion of- 966 parts of nitrate offbismuth in 6000 parts ofa 30 pe1 e1e'n t. acetic acid is added. The mixture thus obtained "is neutralized and the salt'is' filtered oil. It is a .hght yellow powder insoluble in benzene,

ether and alcohol and soluble in caustic alkalis.

bismuth. I

.Iclaimz- J The new product being chemically 'a hismuth salt of gaflocarboxylic acid which is It contains about 60 per cent. of

after being dried 4 l" t powder insoluble Eldohiol soluble in valuable astringent caustic alkalisfi' being and disinfectinga ent; and containing about .60 perfcent; of: bismuth, substantially as described. I r

' In testimony wl ler'eo f I have hereunto set presence of two subscribing Witnesses. I:

I RUDOLPH BERENDES. [1 s.]

Witnesses:

IIEL X SU ALBsuT Ncrmgf 

